c++ split string by space into array
Astringstream associates a string object with a stream allowing you to
read from the string as if it were a stream (like cin). To use stringstream,
we need to include sstream header file.
The stringstream class is extremely useful in parsing input.
in the cp when u need to remove spaces from the string and store it into the
vector or other type of data structure at that it will be your
first choice out there.